PSI - Issue 8

Francesca Curà et al. / Procedia Structural Integrity 8 (2018) 204–211 Author name / Structural Integrity Procedia 00 (2017) 000 – 000

208

5

Table 3. Figure5 shows an example of numerical results in terms of contact pressure distribution on the shaft (left) and on the hub (right). Also the shape of the contact area is emphasized in this figure.

200 225 250 275 300 325 350 375 400 425 450 475 500

200 225 250 275 300 325 350 375 400 425 450 475 500

ρ 1min

700�Nm

500�Nm

ρ 1min

ρ 1min

700�Nm

p max [MPa]

p mean [MPa]

500�Nm

ρ 1min

1/11.3

1/10.9

1/10.7

1/10.5

1/11.3

1/10.9

1/10.7

1/10.5

ρ 1max [mm

-1 ]

ρ 1max [mm

-1 ]

T=700�;� ρ 1min=1/3000 T=700�;� ρ 1min=1/5000 T=500�;� ρ 1min�=�1/4000

T=700�;� ρ 1min=1/4000 T=500�;� ρ 1min=1/3000 T=500�;� ρ 1min�=�1/5000

T=700�;� ρ 1min=1/3000 T=700�;� ρ 1min=1/5000 T=500�;� ρ 1min�=�1/4000

T=700�;� ρ 1min=1/4000 T=500�;� ρ 1min=1/3000 T=500�;� ρ 1min�=�1/5000

FEM�;�T=700Nm�;� ρ 1min=1/3000 FEM�;�T=500Nm�;� ρ 1min=1/5000

FEM�;�T=700Nm�;� ρ 1min=1/4000

FEM�;�T=700Nm�;� ρ 1min=1/3000 FEM�;�T=500Nm�;� ρ 1min=1/5000

FEM�;�T=700Nm�;� ρ 1min=1/4000

Fig. 3. Maximum contact pressure (left) and mean contact pressure (right) trends: analytical and numerical results.

10

9

ρ 1min

8

ρ 1min

700�Nm

7

6

500�Nm

5

Area � [mm 2 ]

4

3

2

1

0

1/11.3

1/10.9

1/10.7

1/10.5

ρ 1max [mm

-1 ]

T=700�;� ρ 1min=1/3000 T=700�;� ρ 1min=1/5000 T=500�;� ρ 1min�=�1/4000

T=700�;� ρ 1min=1/4000 T=500�;� ρ 1min=1/3000 T=500�;� ρ 1min�=�1/5000

FEM�;�T=700Nm�;� ρ 1min=1/3000 FEM�;�T=500Nm�;� ρ 1min=1/5000

FEM�;�T=700Nm�;� ρ 1min=1/4000

Fig. 4. Contact area trends: analytical and numerical results.

Table 3. Values of a/b for each combination of maximum and minimum curvatures. ρ 1max [mm -1 ] ρ 1min [mm -1 ] a /b 1/11.3 1/5000 16.66 1/10.9 1/5000 18.11 1/10.7 1/5000 19.28 1/10.5 1/5000 20.25 1/11.3 1/4000 14.62 1/10.9 1/4000 16.26 1/10.7 1/4000 17.07 1/10.5 1/4000 17.85 1/11.3 1/3000 12.33 1/10.9 1/3000 13.63